Find the gradient field F of the function f.f(x, y, z) = ex8 + y7 + z4
A. F = 8x7ex8i + 7y6ey7j + 4z3e z4k
B. F = (x8ex8 + y7 + z4)i + (y7ex8 + y7 + z4)j + (z4ex8 + y7 + z4)k
C. F = (8x7ex8 + y7 + z4)i + (7y6ex8 + y7 + z4)j + (4z3ex8 + y7 + z4)k
D. F = (x7ex8 + y7 + z4)i + (y6ex8 + y7 + z4)j + (z3ex8 + y7 + z4)k
Answer: C
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